[Dwight]

A missionary realizes that the one thing he never taught the
natives was how to speak English, so he takes the chief for a
walk in the forest. He points to a tree and says to the chief,
"This is a tree." The chief looks at the tree and grunts, "Tree. "
The missionary is pleased with the response. They walk a little
farther and the missionary points to a rock and says, "This is a
rock." Hearing this, the chief looks and grunts, "Rock." The
missionary is really getting enthusiastic about the results when
he hears a rustling in the bushes.
As he peeks over the top, he sees a couple of natives in the
midst of heavy sexual activity. The missionary is really
flustered and quickly responds, "Riding a bike."
The chief looks at the couple briefly, pulls out his blowgun and
kills them.
The missionary goes ballistic and yells at the chief that he has
spent years teaching the tribe how to be civilized and kind to each
other, so how could he kill these people in cold blood that way?
The chief replied, "My bike."